There are countless references to this story, often in the context of teshuvah: There once was a rabbi who said to his students: “we are as far from where God wants us to be as East is from West”? And then he said to them: “By the way, just how far is it from east to west? One of his students raised his hand and said: “11 thousand miles. I just heard that on NPR.” The rabbi said, “no, that is wrong.” Another student raised his hand and said: “25 thousand miles. That’s the circumference of the world.” The rabbi said, “no, that is wrong.” A 3rd student said, “6 thousand miles,” the rabbi said, “no, that is wrong.” The distance from east to west is one step." Who is the Rabbi or where is the original source?